1
Start in a horizontal plank position with body suspended parallel to the ground, supported by hands (or forearms) and toes with shoulders directly above wrists, core engaged, and body forming a straight line from head to heels.
2
Maintain neutral spine alignment with head in line with torso, engage core by bracing abdominals, and ensure shoulders are packed with scapulae stable and depressed away from ears.
3
From the plank position, slowly pike hips upward by flexing at the waist while keeping legs relatively straight, creating an inverted V-shape with the body, allowing the torso to shorten and abdominals to lengthen eccentrically.
4
Drive hips back down and forward to return to the original plank position by extending through the hip and engaging the rectus abdominis concentrically, maintaining core tension throughout the movement to prevent lumbar hyperextension.